Doorknob spindle securing means



Feb. 3, 1953 R. c. CERF, JR

nooRxNoB SPINDLE SECURING MEANS 2 SHEETS-SHEET l Filed May 2, 1949 53FIG lla |Nvl-:NTOR

ROBERT C. CERF JR.

ATTORNEY Feb. 3, 1953 R. c. CERF, JR 2,627,436

DORKNOB SPINDLE SECURING MEANS Filed May 2, 1949 2 SHEETS--SHEET 2INVENTOR fir-X 3| r ROBERT G. CERF JR.

l. wlw/lm 'U @L ATTORNEY Patented Feb. 3, 1953 DOORKNOB SPINDLE SECURINGMEANS Robert C. Cerf, Jr., Los Angeles, Calif., assignor to HollymadeHardware Manufacturing Company, Los Angeles, Calif., a corporation ofCalifornia Application May z, 1949, serial No. 90,942

2 Claims.

This invention relates toa door knob lock and latch set with insideturn-button spindle-locking means for the outside knob and including keyoperable latch retraction means. Y

The general object of the invention is to provide an improved dook knoblock and latch set particularly adapted for outside doors in which theoutside knob may be locked against turning by a turn button located inthe inside knob which locking remains effective after subsequentturnlngs of the inside knob for retracting the latch and afterretraction of the latch by means of a key operating in a cylinder lockin the outside knob. Another object is to provide in the lock set of thekind described means for easily removing the inside and outside knobsand spindles to facilitate the proper installation of the lock set on adoor but which means, after the mounting of the set on the door, becomeinaccessible for removal of the outside knob and spindle except by4.access from the inside of the door. A further object is to provide ina door knob and lock set of the kind described, means for disconnectingthe outside knob and spindle without removal of the body or latch unitfrom the door.

These and other objects are attained by my invention which will beunderstood from the iollowing description, reference being made to theaccompanying drawings which form a part hereof, in which:

Figure 1 is a plan View partly in section of a preferred form of my lockand latch set as mounted on a door, with portions broken away to bettershow the structure;

Figure 2 is a cross-sectional View taken on the line 2--2 of Figure l; y

Figure 3 is a cross-sectional view taken on the line 3--3 of Figure 1;

Figure 4 is a cross-sectional view taken on the line 4-4 of Figure l;

Figure 5 is a cross-sectional view taken on the line 5-5 of Figure 2;

Figure 6 is a cross-sectional View taken on the line 6--6 of Figure 2;

. Figure 7 is a perspective View of theoutside half portion of the lockbody;

Figure 8 is a perspective view of the inside half portion ofthe lockbody;

Figure 9 is a perspective view of the retractor;

Figure 10 is a disassembly view of the key-actuated shaft and rollbacktogether with the outside spindle locking means, the parts being shownin perspective;

1 Figure 11 is a perspective view of the turn buttonlocking sleeve;

Figure 12 is a perspective View of the retainer key plate used torotatably hold the outside spindle in the body;

Figure 13 is a perspective view of the for the outside knob;

Figure 141s a partial view in perspective show ing the inside knobassembly; and

Figure 15 is a partial cross-sectional view taken on the line I--i 5 ofFigure 1. l

in the preferred form of my invention shown in the drawings, the lockand latch set consists of a body 20 Whichis generally cylindrical inshape and is assembled from die-cast metal half portions designated 2|for the outside half portion and 22 for the inside half portion, thesehalf portions being assembled as a hollow unitary body 20 by means ofthe assembly screws 23 Whose threaded ends engage threaded holes 24 `inthe outside half portion 2l, the corresponding unthreaded holes 25 inthe inside half portion 22 being countersunk at 26 to receive the heads21 of the assembly screws 23. In the drawings, the left hand knobcontaining the key-actuated cylinder lock and the appurtenances theretoare referred to as outside and the right hand knob containing the turnbutton and the appurtenances thereto are referred to as inside, thisreferring to the door mounting, for example, such as an entrance housedoor. The outside half portion 2l is provided with an outside threadedoutwardly extending axial bearing sleeve 29 adapted for the mountingtherein of the outside tubular spindle 30 upon the end of which theoutside knob 3l is fastened. The inside half portion 22 is also providedwith an elongated axiall bearing sleeve 32 extending from the body 22,inwhich is mounted for rotation the inside tubular spindle 33 on the endof which is mounted the inside knob 34. A window 35 is provided to giveaccess to the interior of the housing for purposes to be explainedbelow.

The latch bolt retractor 40 consists of a generally rectangular framehaving a thrust partition wal1 4|, and having the opposed sides taper toan end slot 42 at the end of the frame opposite said partition wall 4I,said notch being adapted to engage the latch bar 54 by means of the endlugs on the end thereof. The retractor 40 is adapted to reciprocatewithin the hollow body 2t, being provided with guide members 43 formedin the interior of the outside half portion 2|. The retractor 40 isarranged to slide spindle on the retainer key plate 44 which is disposedand adapted to slide between the guide members 43, the further structureand function of which will be described below. A coil compression spring41 is interposed between the bottom of the hole formed between the halfbodies 2| and 22 in the bosses 46, and the underside of the thrustpartition wall 13|, of the retractor 40, thus normally forcing theportion of the retractor having the end slot 42 toward the window 49 inthe body 2i) at which position the latch bar unit 50 is attached, aswill be described.

The spring latch unit t consists generally of a cylindrical housing 5Iwhich is adapted to t in a hole drilled from the edge of the door atright angles to the main body mounting hole in the door, the unit beingheld by the flush plate 52 which is countersunk and attached to the edgeof the door by screws (not shown). The latch bolt 53 normally protrudesthrough an opening in the ilush plate, the latch bolt being connected tothe latch bar 513 which extends through the other or rear en d closure55. The latch bar 5d is provided with end lugs 56which, as describedabove, are engaged by the slot 42 of the retractor. The attaching tabs5'! extending from the end closure 55 are formed to slide under themargins of the window i9 in the bodyV 20, the edge ofl the cylindricalhousing 5I of the latch unit being arranged to press on the opposite oroutside surf-ace of the margins of the window 49. The latch unit 5i? isthus slidingly attached to the body 23 at the window so that itslongitudinal position relative to the cylindrical main body may beadjusted by sliding it alongthe marginal edge of the window. rThe coilspringY 58 isl provided within the cylindrical housing 5IV abutting theend closure 55 and the inside end of the latch bolt 53, thus normallytending to push the latch bolt outwardly.

The outside tubular spindle 3B is provided with an outwardly extendingdetent button G which is adapted to be engaged by the retainer key plate44 which as previously stated is adapted to slide between the guidemembers L33. The plate M is provided with an elongated central opening6I for the spindle which permits the plate to be shifted flatwise, thelegs $2 itting between the guides 53 and the spring boss 45. The plateis provided with a right angled lug 63 on its back side, which coactswith a small compression coil spring 54 which is seated in a groove 65in the half body 2l, to normally holdv the key plate 44 in keyingposition behind the spring detent button 60. The outside knob spindle3i) is released by manually raising the key plate 54 with a pointed toolT through windows in the body and the inside clamping plate.

The outside knob 3l consists of a knob body 'I6 having a rim portion 'iland a coaxial hub I8 which is connected to the rim portion by the disk'I9 disposed inwardly from the rear face of the knob, and is provided onits rear side with a rim 88 dening the large opening on the rear face ofthe knob which is closed by the closure shell member SI. The mainportion of the knob is covered by a shell spun or otherwise formed overthe knob body to form the usual ellipsoidal door knob whose front faceis provided with an opening 83 coinciding with the opening of the hub'I8 where it abuts the front inside face of the knob, the margin of theshell around theV hole being turned in against the inside wall of saidhub. The outside knob spindle 30 is attached to the face of the knobdisk 'I9 by attaching ears 84 turned outwardly from the periphery of thespindle, holes 85 being provided therein for the screws 86 which arethreaded into corresponding threaded holes 8T in the disk. The spindleis fitted over the extension 88 of the hub i3 and two slots B9 and 89Aare provided 180 degrees apart to alternatively hold the pin chamber 3%of the pin tumbler lock QI. 'The slot S2 in the lock cylinder 33 for aremovable cylinder operative key is exposed at the opening 83 on thefront face of the outside knob 3|. When it is desired to reverse theposition of the key slot 22 so that the unnotched side of the key willbe on the lower side, for example, the spindle 33 is disconnected fromthe disk l@ by removing the screws t8, following which the knob isturned through 180 degrees and again attached to the ears 8f! of thespindle with the alternative slot A engaging the pin chamber and withthe key slot in reversed position.

The inner end of the lock cylinder 93 is provided with a cap 9@ which isprovided with a noncircular hole 95 which makes operative connectionthrough the tongue 96 with the turning bar- 9'! for the key-actuatedsemi-cylindrical rollback lill, the said bar being centered axiallywithin the outside tubular spindle 3) by the washer 98, stop arms 99adjacent the tongue 96, and by the locking tab disk I @il rotatablymounted upon the bar el' adjacent the rollback IilI, said rollbackextending from the rollback disk H32 which is non-rotatably attached tothe end of the bar 9i, for example, by a tongue i533, whichV is heldrigidly in the corresponding-hole Iiili inA A spacer member IE5 is saidwasher 9S and spacer |65. The lockingl tabdisk Ilil is provided-with aperipherally extending locking tab I'I, and is conveniently providedwith an aligning tab Hi8 for the purposes described below.

The outside spindle 3@ is provided at its unattached end with a rollbackI I Q which is a semicylindrical end o-f the tubular spindle, thelongitudinal edges I II being adaptedto press alternatively when theoutside knob is turned, upon the thrust partition wall 5I of theretractor 4:3 to thereby move the retractor and the latch bolt which isoperatively attached thereto. In order to permit the necessary rotationof the outside knob 3I, a portion of the spindle 35 between the rollbackIIi and thelocking slot |39; approximately one-half the circumference,is cut away to avoid interference with the locking tab IIl'I when thistab is not being depressed by the turn button and its associated parts,that is, when the outside knob 3I is freeto be turned to operate,

the latch.

The inside knob 35i is attached to the inside tubular spindle 33, thespindle extending throughthe knob to the front face thereof to define anopening II5 in which the turn button IIG is mounted. The knob isprovided with a nish hub II'I extending toward the bodylZil andtelescoping over a portion of the spindle 33, the end abutting the endof the inside bearing sleeve 32. The spindle 33 is provided with acircumferential retainer key slot I I8 which extends approximatelyone-half the circumference of the spindle to permit the turning of thespindle for a suiiicient amount to fully move the retractor di) by meansof the rollback IIB at the end of the spindle 33. This rollback H9 atthe end of the spindle 33 consists of a short segment of the tubularspindle with longitudinal edges I2 arranged to alternatively press uponthe thrust partition wall 4| of the retractor 40, one edge beingeffective when the knob 34 is turned in one direction and the other edgewhen the knob is turned in the opposite direction, in either case tomove the retractor and withdraw the latch bolt 53. The retainer key |22iits in the retainer key slot I8 and in the retainer key slot |2| in thesleeve 32 of the body 20. The retainer key |22 is normally held down inplace by a hairpin spring |23 which is attached at one end to the end ofthe cylindrical body 2u in the groove |24 by the dovetailed keeper |25.

The turn button I6 is connected to the spindle locking sleeve |21 by thebayonet bar |28 Whose other end is swivel connected at |29 to thespindle locking sleeve |21. The spindle locking sleeve |21, in itsmid-portion, is cut away leaving a segment |33 of about one-third of thecylinder to avoid interference with the reoiprocatory movement of theretractor 40. The` other end of `the locking sleeve |21 is provided witha circumferential opening |30 on one side for the locking tab |01 and onthe opposite side with a circumferential opening |3| for the aligningtab |08.

The bayonet bar |28 connecting the turn button ||6 and the lockingsleeve |21 is provided With a bayonet pin |35 extending outwardly fromthe bar and adapted to follow the bayonet groove |36, which is providedin the -end of the inside tubular spindle 33 adjacent the turn buttonI6. An aligning tab |31 is provided opposite the bayonet pin tab |35 inorder to hold the latter in the bayonet groove |36 when the turn buttonis pressed inwardly and turned to lock the button in its inwardposition. The longitudinal or inward movement of the button I |6 movesthe locking sleeve |21 so that the end |38 of the opening |30 pressesthe locking tab |01 into the locking slot |39 in the outside spindle 30,this locking slot being on the side of the cylinder opposite therollback H0. The locking tab |01 also engages the groove |40 in theoutside bearing sleeve 29, thus preventing rotation of the spindle 30relative to the bearing sleeve 29. The turn button ||6 is thus pressedinwardly and rotated in order to engage the bayonet pin tab |35 in thebayonet groove |3 and thereby hold the locking sleeve |21 against thelocking tab |01, locking the outside knob against rotation. The insideknob, because of the swivel connection at |29, may be rotated withoutreleasing the turn button; H6. thus the retractor and the latch bolt maybe operated from the inside knob without effecting the locked conditionof the outside knob.

The latch may also be retracted by the use of the removable pocket key Kwhich operates the lock cylinder 93, which in turn is operativelyconnected through the turning bar 91 to the rollback |0|. This rollback|01 actuates the retractor independently of the rollbacks ||0 and I9 onthe outside spindle 3i) and the inside spindle 33, and irrespective ofthe position of the turn button |6, thus permitting the retraction ofthe latch bolt at any time by means of the key K.

The body 20 is arranged to be positioned centrally in the mounting holein the door D by means of the threaded clamping disk |44 and theremovable clamping disk |45 disposed respectively on the outside andinside of the door. An opening |46 is provided in the clamping disk |45for the inside bearing sleeve 32 and two windows are provided atdiametrically opposite positions, one window |41 being provided to giveaccess to the hairpin spring |23 holding the retainer key.-

l22, and the other Window,` |41A coinciding with the window 35 in theinner half 22 of the body 20, through which a long pointed rod or pick Tmay be inserted to raise the retainer key plate 44 against the spring 64over the detent button 60, and thereby release the outside knob 3| andits spindle 30. The threaded clamping disk |44 is also provided with anopening |43 for the outside bearing sleeve 29. The position of thethreaded clamping disk |44 relative to the outside face |48 of the body20 is adjustable by rotationon the threaded sleeve 29 to correspond tothe thick# ness of the door on which the set is to be mounted eitherbefore or after the body 20 is placed in the hole, following which theremovable clampdisk |45 is attached by two or more screws |50 threadedinto the face |49 of the inside half body portion 22, the heads of thescrews |50 holding the disk, thus clamping the marginal edges of thedisks against the margins around themounting hole in the door. .C

A rosette |5| having an outwardly extending nish hub |52 is preferablynon-removablyattached to the peripheral edge of the attached clampingdisk |44 by crimped-over edges |53 as shown for example particularly inFigure 1. The

hub |52 is adapted to cover the joint between the,

knob closure member 8l and the outsideA bearing sleeve 29, thus securelyhiding al1 screws Yand retainer keys, so that the outside knob andspindle` may not be tampered with.

An inside rosette |54 having a turned-over peripheral rim |55 is adaptedto frictionally engage the peripheral edge of the removable clampingdisk |45, the rosette being provided with a central opening |56 for theinside bearing sleeve 32, and having a nish hub |51 extending toward theinside knob 34 and covering the joint between the nish hub I|1 of saidinside knob 34 and the inside bearing sleeve 32.

The advantages of my invention will be apparent. The rigid die-cast bodyand the integral elongated bearing sleeves for the knob spindles providea durable lock set in which the knobs and spindles do not become looseand Wobbly after long use. The set is adapted to be used upon doors ofslightly varying thicknesses, with the protrusion of the knobs beingequalized on the two sides of the door. The latch bolt is independentlyretracted through a common retractor by the turning of either knob ineither direction and also by means of a removable key turned in eitherdirection. The outside knob may be xed through the inside turn buttonagainst rotation so that entry may not be eiected without the use of aproper key. This outside knob locking is unaffected by the subsequentuse of the inside knob for retracting the bolt, and is also unaffectedby the use of the removable key, the outside knob continuing to belocked against rotation after the key is removed. The outside knob isnot released by pushing in the latch bolt, as in closing the door. Thekey slot for the removable key is easily reversible in position so thatthe lock may be properly positioned on either right or left hand doorsand under the same circumstances the latch bolt unit may be reversed inposition through its tongue and groove connection with the retractor.The outside knob and its attached spindle may be easily disconnected andremoved for changing the key combination or for reversing the positionof the key slot, by raising the retainer key plate by access with apointed rod or tool through the provided windows in the body and thelinsideclamping* plate, without removing.

the latch or lock body from the door, it beingv only necessary to removethe rosette and inside knob. The labor required for installationadjustment and resetting of my lock and latch set is reduced forreciprocation within said body,.said retractorl having a thrust plateagainst which a rollback on the outside knob: spindle presses to retracta spring latch bolt; means for rotatably holding said outside spindle insaid outside sleeve bearing, said means for holding said outside spindlebeingY releasably by means accessible from inside of the door after saidbody is-mounted therein, said means including a retainer key plateslidable between the inside surface of said body and said retractor, anda d'etent button near the rollback end of said outside knob spindle,said retainer key plate being normally spring held adjacent said detentbutton.

2. In a door knob lock and latch set having an 8 outerV knobv with its'.attached tubular spindle mounted for rotation ina lock body independently of an inner knob with its spindle, means for releasably holdingsaidouterknob spindle against removal from saidrbody while permittingaxial rotation, said means'l including a retainer key plate disposedaround said spindle, said spindle. being. provided with an outwardlyextendingdetentlbutton abutting said retainer key plate, said retainerkey plate being slidably movable. inside` said body atrightA angles tothe spindle axisbehindi saiddetent button andrmeans to hold said plateadjacent said spindle at said detent button, the opening in said platebeing elongated to permit shifting of said plate to disengage saiddetent, button and release said spindle.

ROBERT C. CERF, Ja.,

REFERENCES CITED The following'references areofV record in the ille ofthis patent:

UNITED STATES PATENTS Number Name Date 769,768 Phelps Sept. 13,19641,876,079 Schlage; Sept. 6, 1932 1,991,031 Schlage Feb. l2, 19351,994,134 -Ienst ,Mar. 12; 1935 2,046,342 Muck et al. July 7, 19362,076,125 Grimsrud Apr. 6, 1937 2,138,856 Harp Dec. 6,y 1938

